Yeah it works great, I always use a drop or two of blue Dawn and then about an ounce of glycerine per 40 ounces of distilled, it's a surfactant also. If you add to much of the dish soap it can bubble and to much of it seems to hurt temp's a little. If you use over about an ounce of glycerine it seems to hurt temp's a little. But I can use a drop or two of the soap and a ounce of glycerine and it helps me to bleed faster and seems to help temp's a little more then just using each singly.

A lot of it is it helps to release all those little micro-bubbles that can get trapped in your blocks and rad, that lets the coolant make full contact with everything and that's what helps temp's I guess.

Yeah it works great, I always use a drop or two of blue Dawn and then about an ounce of glycerine per 40 ounces of distilled, it's a surfactant also. If you add to much of the dish soap it can bubble and it seems to hurt temp's a little even if it doesn't bubble. If you use over about an ounce of glycerine it seems to hurt temp's a little. But I can use a drop or two of the soap and a ounce of glycerine and it helps me to bleed faster and seems to help temp's a little more then just using each singly.

A lot of it is it helps to release all those little micro-bubbles that can get trapped in your blocks and rad, that lets the coolant make full contact with everything and that's what helps temp's I guess.

Wouldn't a surfactant lower the water's turbulence when it enters the water block, which is ultimately what you want more of?

It shouldn't, that turbulence is going to be caused more by the block construction and smoothness of the material it is flowing over. Directing the water to the center of the block, having bends in the block, having dimples on the block surface are the things that will cause turbulance.

The surfactant action is getting the water to actually make better contact with the walls of the block, tubing, ..... whatever it comes in contact with. You want turbulent water but also water that is always in good contact with your block.